Spool



FIG. 1 is a perspective view of a spool showing one preferred embodiment of my new design;

FIG. 2 is a front elevational view of FIG. 1;

FIG. 3 is an end view of my new design of FIG. 1, the opposite end view being substantially the same; and,

FIG. 4 is a rear plan view of the preferred embodiment of FIG. 1. 

The ornamental design for the spool, as shown and described. 